code: def push_xcom_values(xcom_dict):
      safe_mkdir(K8S_XCOM_DIR_PATH)
      with open(
          os.path.join(K8S_XCOM_DIR_PATH, "return.json"), "w"
      ) as f:
          json.dump(xcom_dict, f)
  
file_path: metaflow/metaflow/plugins/airflow/airflow_decorator.py
imports: import json
  import os
  from metaflow.decorators import StepDecorator
  from metaflow.metadata import MetaDatum
  from .airflow_utils import TASK_ID_XCOM_KEY, FOREACH_CARDINALITY_XCOM_KEY
label_desc: Use image node_id 2 for calling a global function with example usage: push_xcom_values(xcom_dict) without return types